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The frequency and corresponding energy of electromagnetic waves are given in the table below. 8.1 Describe how an electromagnetic wave propagates. (2) 8.2 What is the relationship between frequency and energy of an electromagnetic wave, as shown in the table above? (2) 8.3 Calculate the: 8.3.1 Frequency of wave E (3) 8.3.2 Wavelength of wave … Read more
A sound wave is produced by a source placed a certain distance from a building as shown below. The echo reaches the source after 8 seconds. The speed of sound in air is 340 m·s-1. 7.1 Define the term longitudinal wave. (2) 7.2 Calculate the distance between the sound source and the building. (4) 7.3 … Read more
The diagram below represents a transverse wave produced by source A. 6.1 Define the term amplitude of a wave. (2) 6.2 Write down the amplitude, in metres, of this wave. (1) 6.3 Determine the period of this wave. (1) 6.4 Calculate the: 6.4.1 Speed of the wave if the wavelength is 0,8 m (5) 6.4.2 … Read more
A 2 kg ball rolls from rest from point A on a frictionless track ABCD, as shown below. The horizontal section, BC, of the track is 5 cm above the ground. The ball reaches point D, 30 cm above the ground, at a speed of 1,71 m∙s-1. 5.1 Write down ONE term for the following … Read more
The velocity-time graph below represents the motion of a car over a time period of 12 seconds. The car initially moves NORTH. 4.1 Define the term velocity. (2) 4.2 Describe the motion of the car from C to E. (3) 4.3 WITHOUT USING EQUATIONS OF MOTION, calculate the: 4.3.1 Distance that the car travels from … Read more
An aeroplane touches down on a runway at a velocity of 67 m·s-1, as illustrated below. After 30 seconds the velocity of the aeroplane is 8 m·s-1.The aeroplane then continues at a CONSTANT VELOCITY for a further 800 m before leaving the runway. The length of the runway is 2 000 m. 3.1 Define the … Read more
Study the advertisement (TEXT D) and answer the set questions. TEXT D 3.1 What type of service is being advertised? (1) 3.2 To whom does this advertisement appeal? (1) 3.3 Identify the slogan used in the advertisement. (1) 3.4 State ONE way in which one can get access to the emergency assistanceapplication. (1) 3.5 What … Read more
Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A–D) next to the question numbers (1.1 to 1.10) in the ANSWER BOOK, e.g. 1.11 E. Each question has only ONE correct answer. 1.1 Which ONE of the following physical quantities is a scalar quantity? A … Read more
A group of learners, who are nervous about flying, are going overseas to attend a youthconference. You have been overseas before, so you have been asked to meet withthem and give them a few tips on flying. Read TEXT C below and list SEVEN points that you will include in your talk entitled,TIPS FOR NERVOUS … Read more
Read BOTH TEXT A and TEXT B and answer the set questions. TEXT A 1.1 What do those people who come to see Emma have in common? State TWOpoints. (2) 1.2 Selfies,Sexts and Smart phones: Teenager’s Online Survival Guide. State whythese words are written in italics. (1) 1.3 ‘Emma Sadleir, the country’s leading social media … Read more